class UserNameException extends Exception {
    public UserNameException(String message) {
        super(message);
    }
}
class PasswordException extends Exception {
    public PasswordException(String message) {
        super(message);
    }
}
public class LogIn {
    private String userName = "addmin";
    private String password = "123456";
    public static void loginInfo(String userName, String password)
            throws UserNameException,PasswordException{
        if (true!=(userName.equals(userName))) {
            throw new UserNameException("用户名错误！");
        }
        if (!password.equals(password)) {
            throw new PasswordException("用户名错误！");
        }
        System.out.println("登陆成功");
    }
    public static void main(String[] args) throws UserNameException, PasswordException {
        loginInfo("admin", "1234456");
        /*try {
            loginInfo("admin", "123456");
        } catch (UserNameException e) {
            e.printStackTrace();
        } catch (PasswordException e) {
            e.printStackTrace();
        }*/
    }
}